[Bug tree-optimization/72817] [7 Regression] wrong code at -O3 on x86_64-linux-gnu (in both 32-bit and 64-bit modes)

[jakub at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=72817

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
(In reply to amker from comment #7)
> Thanks for reporting.
> This may indicate something is still wrong in NE_EXPR analysis.  I am OoO
> right now and will look into this once I get back.

This has been an signed vs. unsigned char issue, see #c6.  I believe it should
be fixed now.